"I was like, are there other people in there? Because I saw a lady crying and I'm thinking there's somebody in there dying because there's a whole bunch of smoke," saidneighbor Nahdya Olive.

The fire broke out just before 7 p.m. on Maywood Street, just off Perrysville Avenue, at Michelle Greer's home.

Greer had just come back from work and had laid down to take a nap when she smelled smoke.

"It was smoke, it was black smoke. It was horrible, you couldn't even see," said Greer.

Six people were inside the home. Greer ran out, but panicked when she saw her sister and niece on the roof, trapped almost 30 feet in the air.

At first, firefighters couldn't get to them because the ground around the home was sloped.

"The pumpers don't have ladders long enough to reach there. They could reach a second floor window from a flat surface, but under these circumstances, it was beyond their reach," said Pittsburgh Bureau of Fire Deputy Chief Michael Mullen

Despite a huge amount of smoke, the flames were relatively small so firefighters were able to get it under control and carry the women to safety through the house.

Both women were hospitalized for smoke inhalation.

Fire investigators said they believe the fire was accidental, caused by a problem in the house's electrical system.

The onslaught on Houthis rebels in Yemen continued Tuesday, with the Saudi-led coalition asserting increasing control while locals fled the chaos and casualties piled up -- dozens of civilians among them.